Single-Chain Swap

Unizen API for Dex Aggregator Single-Chain Transaction

This document provides an overview of the Unizen API for single-chain transactions via the Unizen DEX aggregator. The API provides access to all available quotes for a trade from supported DEXes, as well as the ability to generate transaction data for a trade.

Unizen's trading architecture is decentralized, providing access to over 20,000 digital assets across more than 160 decentralized exchanges and 7 blockchains. This allows users to get the most out of their trades and easily access digital assets on any supported blockchain.

Available Endpoints

The Unizen API for single-chain transactions provides the following endpoints:

• GET /trade/v1/{chainId}/quote/single: Find all available quotes for a single-chain trade via the Unizen DEX aggregator.

• GET /trade/v1/{chainId}/swap/single: Generate transaction data for a single-chain trade via the Unizen DEX aggregator.

Network	Quote Endpoint	Swap Endpoint
Ethereum (Mainnet)	/trade/v1/1/quote/single	/trade/v1/1/swap/single
Polygon	/trade/v1/137/quote/single	/trade/v1/137/swap/single
Binance Smart Chain	/trade/v1/56/quote/single	/trade/v1/56/swap/single
Optimism	/trade/v1/10/quote/single	/trade/v1/10/swap/single
Fantom	/trade/v1/250/quote/single	/trade/v1/250/swap/single
Avalanche	/trade/v1/43114/quote/single	/trade/v1/43114/swap/single
Arbitrum	/trade/v1/42161/quote/single	/trade/v1/42161/swap/single

Using the Unizen API for Single-Chain Transactions

1. Call GET /trade/v1/{chainId}/quote/single to get all available quotes for a single-chain trade via the Unizen DEX aggregator.

2. Call GET /trade/v1/{chainId}/swap/single to generate transaction data for a single-chain trade via the Unizen DEX aggregator.

3. Send the transaction to the DEX aggregator contract using the sendTransaction function, passing in the from address, to address, data, gasPrice, gasLimit, and value parameters.

Note: you can avoid calling the 2nd step (swap call) if you pass the sender and the parameter disableEstimateGas=false to the quote endpoint, so you will get the gas estimation and the transaction data to conduct the trade

Minimum Trade Amount:

• The minimum amount to trade is $1 (in USD value of tokens). Trades with amounts below this limit are not allowed.

Solana

You can get quotes and execute trades on supported EVM chains (Ethereum, BSC, Polygon, Berachain, etc.) as well as on Solana. The process is identical for both, except for the final step—sending the confirmation to the user's wallet. This step requires different handling depending on whether the chain is EVM-based or Solana. The details are explained in the following articles.

Important: the chain id for Solana is -846853820